Continuity mistake: When volunteering with Kaboom, Leslie says they are building in Eagleton, which she describes as "two towns over." As the show continues we visit the Eagleton/Pawnee border and the neighboring towns become a plot point for many episodes. (00:01:35)
Factual error: Leslie mentions that Eagleton is "2 towns over." We in later episodes see the border wall between them (S3E12), indicating they're right next to each other.